<script setup lang="ts">
import { ref, reactive, computed } from 'vue'
import { useParallax, useThrottleFn, useEventListener } from '@vueuse/core'
// import dayjs from 'dayjs'
import { useLang } from '../../composables/lang'
import homeLocale from '../../../i18n/pages/home.json'
import sponsorLocale from '../../../i18n/component/sponsors-home.json'
import type { CSSProperties } from 'vue'

const target = ref<HTMLElement | null>(null)
const parallax = reactive(useParallax(target))
const jumbotronRedOffset = ref(0)
const jumbotronRef = ref<HTMLElement | null>(null)
const lang = useLang()
const homeLang = computed(() => homeLocale[lang.value])
const sponsors = computed(() => sponsorLocale[lang.value])

const containerStyle: CSSProperties = {
  display: 'flex',
  flexDirection: 'column',
  justifyContent: 'center',
  alignItems: 'center',
  transition: '.3s ease-out all',

  position: 'relative',

  perspective: '300px',
}

const cardStyle = computed(() => ({
  background: '#fff',
  minHeight: '30rem',
  width: '50rem',
  borderRadius: '5px',
  transition: '.3s ease-out all',
  boxShadow: '0 0 20px 0 rgba(255, 255, 255, 0.25)',
  transform: `rotateX(${parallax.roll}deg) rotateY(${parallax.tilt}deg)`,
}))

const layerBase: CSSProperties = {
  position: 'absolute',
  width: '100%',
  height: '100%',
  transition: '.3s ease-out all',
}

const layer0 = computed(() => ({
  ...layerBase,
  transform: `translateX(${parallax.tilt * 10}px) translateY(${
    parallax.roll * 10
  }px) scale(1)`,
}))

const jumbotronRedStyle = computed(() => ({
  height: `${jumbotronRedOffset.value}px`,
}))

const handleScroll = useThrottleFn(() => {
  const ele = jumbotronRef.value
  if (ele) {
    const rect = ele.getBoundingClientRect()
    const eleHeight = ele.clientHeight + 55
    let calHeight = (180 - rect.top) * 2
    if (calHeight < 0) calHeight = 0
    if (calHeight > eleHeight) calHeight = eleHeight
    jumbotronRedOffset.value = calHeight
  }
}, 10)

useEventListener(window, 'scroll', handleScroll)

// interface CountdownT {
//   days: string
//   hours: string
//   minutes: string
//   seconds: string
// }
// const releaseDate = dayjs('2022-02-07T11:00:00.000+08:00')
// const isBeforeRelease = ref(false)
// const countdownText = ref<CountdownT>({} as CountdownT)
// const calReleaseCountDown = () => {
//   if (dayjs().isBefore(releaseDate)) {
//     isBeforeRelease.value = true
//     const dayDiff = releaseDate.diff(dayjs(), 'day')
//     countdownText.value.days = String(dayDiff).padStart(2, '0')
//     const hourDiff = releaseDate.diff(dayjs(), 'hour') - dayDiff * 24
//     countdownText.value.hours = String(hourDiff).padStart(2, '0')
//     const minuteDiff =
//       releaseDate.diff(dayjs(), 'minute') - hourDiff * 60 - dayDiff * 24 * 60
//     countdownText.value.minutes = String(minuteDiff).padStart(2, '0')
//     const secondDiff =
//       releaseDate.diff(dayjs(), 'second') -
//       minuteDiff * 60 -
//       hourDiff * 60 * 60 -
//       dayDiff * 24 * 60 * 60
//     countdownText.value.seconds = String(secondDiff).padStart(2, '0')
//   } else {
//     pauseCountdown()
//   }
// }

// const { pause: pauseCountdown } = useIntervalFn(
//   () => calReleaseCountDown(),
//   1000,
//   { immediateCallback: true }
// )
</script>

<template>
  <div ref="target" class="home-page">
    <template v-if="isBeforeRelease">
      <div class="banner">
        <div class="banner-desc banner-dot">
          <h1>
            <span>{{ homeLang['title_release'] }}</span>
          </h1>
          <p>{{ homeLang['title_sub'] }}</p>
        </div>
      </div>
      <div class="count-down">
        <div class="cd-main">
          <div class="cd-date">Feb 7, 2022, 11 AM GMT+8</div>
          <div class="cd-time">
            <div class="cd-item">
              <div class="cd-num">
                <span>{{ countdownText.days[0] }}</span>
                <span>{{ countdownText.days[1] }}</span>
              </div>
              <div class="cd-str">DAYS</div>
            </div>
            <div class="cd-item">
              <div class="cd-num">
                <span>{{ countdownText.hours[0] }}</span>
                <span>{{ countdownText.hours[1] }}</span>
              </div>
              <div class="cd-str">HOURS</div>
            </div>
            <div class="cd-item">
              <div class="cd-num">
                <span>{{ countdownText.minutes[0] }}</span>
                <span>{{ countdownText.minutes[1] }}</span>
              </div>
              <div class="cd-str">MINUTES</div>
            </div>
            <div class="cd-item">
              <div class="cd-num">
                <span>{{ countdownText.seconds[0] }}</span>
                <span>{{ countdownText.seconds[1] }}</span>
              </div>
              <div class="cd-str">SECONDS</div>
            </div>
          </div>
        </div>
      </div>
    </template>
    <template v-else>
      <div class="banner">
        <div class="banner-desc">
          <h1>{{ homeLang['title'] }}</h1>
          <p>{{ homeLang['title_sub'] }}</p>
        </div>
      </div>
      <div ref="jumbotronRef" class="jumbotron">
        <div :style="containerStyle">
          <div :style="cardStyle">
            <div class="banner" :style="layer0">
              <img src="/images/theme-index-blue.png" alt="banner" />
              <div class="jumbotron-red" :style="jumbotronRedStyle">
                <img src="/images/theme-index-red.png" alt="" />
              </div>
            </div>
          </div>
        </div>
      </div>
    </template>
    <div class="sponsors-container">
      <div class="sponsors-list">
        <a
          v-for="(sponsor, i) in sponsors"
          :key="i"
          :class="['sponsor', sponsor.className]"
          :href="sponsor.url"
          target="_blank"
        >
          <img width="45" :src="sponsor.img" :alt="sponsor.name" />
          <div>
            <p>
              Sponsored by
              <span class="name">{{ sponsor.name }}</span>
            </p>
            <p>{{ sponsor.slogan }}</p>
          </div>
        </a>
      </div>
      <div class="join">
        <el-tooltip placement="top" :hide-after="1000" :offset="20">
          <template #content>
            {{ homeLang['21'] }}
            <a href="mailto:element-plus@outlook.com" target="_blank">
              &nbsp;element-plus@outlook.com
            </a>
          </template>
          <a href="mailto:element-plus@outlook.com" target="_blank">
            <el-button round>{{ homeLang['20'] }}</el-button>
          </a>
        </el-tooltip>
      </div>
    </div>
    <div class="cards">
      <ul class="container">
        <li>
          <div class="card">
            <img src="/images/guide.png" alt="" />
            <h3>{{ homeLang['3'] }}</h3>
            <p>{{ homeLang['4'] }}</p>
            <a :href="`/${lang}/guide/design.html`">{{ homeLang['5'] }}</a>
          </div>
        </li>
        <li>
          <div class="card">
            <img src="/images/component.png" alt="" />
            <h3>{{ homeLang['6'] }}</h3>
            <p>{{ homeLang['7'] }}</p>
            <a :href="`/${lang}/component/layout.html`">
              {{ homeLang['5'] }}
            </a>
          </div>
        </li>
        <li>
          <div class="card">
            <img src="/images/resource.png" alt="" />
            <h3>{{ homeLang['8'] }}</h3>
            <p>{{ homeLang['9'] }}</p>
            <a :href="`/${lang}/resource/index.html`"> {{ homeLang['5'] }} </a>
          </div>
        </li>
      </ul>
    </div>
  </div>
  <footer class="footer">
    <div class="footer-main">
      <h4>{{ homeLang['10'] }}</h4>
      <a
        href="https://github.com/element-plus/element-plus"
        class="footer-main-link"
        target="_blank"
      >
        {{ homeLang['11'] }}
      </a>
      <a
        href="https://github.com/element-plus/element-plus/releases"
        class="footer-main-link"
        target="_blank"
      >
        {{ homeLang['12'] }}
      </a>
      <a
        href="https://element.eleme.io/"
        class="footer-main-link"
        target="_blank"
      >
        {{ homeLang['13'] }}
      </a>
      <a
        :href="`/${lang}/guide/theming`"
        class="footer-main-link"
        target="_blank"
      >
        {{ homeLang['14'] }}
      </a>
    </div>

    <div class="footer-main">
      <h4>{{ homeLang['19'] }}</h4>
      <a
        href="https://gitter.im/element-en/Lobby"
        class="footer-main-link"
        target="_blank"
      >
        {{ homeLang['15'] }}
      </a>
      <a
        href="https://github.com/element-plus/element-plus/issues"
        class="footer-main-link"
        target="_blank"
      >
        {{ homeLang['16'] }}
      </a>
      <a
        href="https://github.com/element-plus/element-plus/blob/dev/.github/CONTRIBUTING.en-US.md"
        class="footer-main-link"
        target="_blank"
      >
        {{ homeLang['17'] }}
      </a>
      <a
        href="https://segmentfault.com/t/element-plus"
        class="footer-main-link"
        target="_blank"
      >
        {{ homeLang['18'] }}
      </a>
    </div>
  </footer>
</template>

<style lang="scss" scoped>
.home-page {
  .banner {
    text-align: center;
  }
  .banner-dot h1 span {
    position: relative;
    &::after {
      content: '';
      position: absolute;
      right: -12px;
      bottom: 8px;
      background: var(--el-color-primary);
      height: 8px;
      width: 8px;
      border-radius: 100%;
    }
  }
  .banner-desc {
    padding-top: 30px;

    h1 {
      font-size: 34px;
      margin: 0;
      line-height: 48px;
      color: var(--text-color);
    }

    p {
      font-size: 18px;
      line-height: 28px;
      color: var(--text-color-light);
      margin: 20px 0 5px;
    }
  }

  .count-down {
    .cd-main {
      background: #f1f6fe;
      border-radius: 10px;
      width: 50%;
      margin: 60px auto 120px;
      padding: 30px 0;
      font-size: 24px;
      color: #666;
      text-align: center;
      font-weight: 600;
    }
    .cd-date {
      font-size: 28px;
    }
    .cd-time {
      display: flex;
      justify-content: space-between;
      width: 80%;
      margin: 10px auto 0;
    }
    .cd-num {
      color: var(--el-color-primary);
      font-size: 78px;
      font-weight: bold;
    }
    .cd-num span {
      width: 50%;
      display: inline-block;
    }
    .cd-str {
      font-size: 22px;
      margin-top: -5px;
    }
  }

  .sponsors-container {
    .join {
      text-align: center;
      margin: 0 0 50px 0;
    }
  }

  .sponsors-list {
    display: flex;
    justify-content: center;
    // jnpf ad class
    .jnpf > div > p:last-of-type {
      font-size: 12px;
    }
  }

  .sponsor {
    margin: 0 20px 10px;
    display: inline-flex;
    width: 300px;
    height: 100px;
    justify-content: center;
    align-items: center;

    .name {
      font-weight: bold;
      color: var(--text-color);
    }

    img {
      margin-right: 20px;
    }

    div {
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    p {
      margin: 0;
      line-height: 1.8;
      color: var(--text-color-light);
      font-size: 14px;
    }
  }
  .jumbotron {
    width: 890px;
    margin: 30px auto;
    position: relative;
    img {
      width: 100%;
    }
    .jumbotron-red {
      transition: height 0.1s;
      background: #fff;
      position: absolute;
      left: 0;
      top: 0;
      overflow: hidden;
    }
  }
  .cards {
    margin: 0 auto 110px;
    width: 1140px;

    .container {
      padding: 0;
      margin: 0 -11px;
      width: auto;
      &::before,
      &::after {
        display: table;
        content: '';
      }
      &::after {
        clear: both;
      }
    }

    li {
      width: 33.3%;
      padding: 0 19px;
      box-sizing: border-box;
      float: left;
      list-style: none;
    }

    img {
      width: 160px;
      height: 120px;
    }
  }
  .card {
    height: 430px;
    width: 100%;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    box-sizing: border-box;
    text-align: center;
    position: relative;
    transition: all 0.3s ease-in-out;
    bottom: 0;

    img {
      margin: 66px auto 60px;
    }
    h3 {
      margin: 0;
      font-size: 18px;
      color: #1f2f3d;
      font-weight: normal;
    }
    p {
      font-size: 14px;
      color: #99a9bf;
      padding: 0 25px;
      line-height: 20px;
    }
    a {
      height: 53px;
      line-height: 52px;
      font-size: 14px;
      color: var(--brand-color);
      text-align: center;
      border: 0;
      border-top: 1px solid var(--border-color);
      padding: 0;
      cursor: pointer;
      width: 100%;
      position: absolute;
      bottom: 0;
      left: 0;
      background-color: var(--bg-color);
      border-radius: 0 0 5px 5px;
      transition: all 0.3s;
      text-decoration: none;
      display: block;

      &:hover {
        color: #fff;
        background: var(--brand-color);
      }
    }
    &:hover {
      bottom: 6px;
      box-shadow: 0 6px 18px 0 rgba(232, 237, 250, 0.5);
    }
  }
  @media (max-width: 1140px) {
    .cards {
      width: 100%;
      .container {
        width: 100%;
        margin: 0;
      }
    }
    .banner .container {
      width: 100%;
      box-sizing: border-box;
    }
    .banner img {
      right: 0;
    }
  }

  @media (max-width: 768px) {
    .banner-desc {
      padding-top: 0px;
    }
    .cards {
      li {
        width: 80%;
        margin: 0 auto 20px;
        float: none;
      }
      .card {
        height: auto;
        padding-bottom: 54px;
      }
    }
    .banner-stars {
      display: none;
    }
    .banner-desc {
      h1 {
        font-size: 22px;
      }
      #line2 {
        display: none;
      }
      h2 {
        font-size: 32px;
      }
      p {
        width: auto;
      }
    }
    .banner-dot h1 span {
      &::after {
        right: -8px;
        bottom: 2px;
        height: 6px;
        width: 6px;
      }
    }
    .count-down {
      .cd-main {
        width: 90%;
        margin: 40px auto 40px;
        padding: 20px 0;
      }
      .cd-date {
        font-size: 22px;
      }
      .cd-num {
        font-size: 38px;
      }
      .cd-str {
        font-size: 12px;
        margin-top: 0px;
      }
    }
    .sponsors-list {
      display: flex;
      flex-direction: column;
      align-content: center;
      .sponsor {
        justify-content: left;
      }
    }
  }
  .theme-intro-b {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 200;
    .intro-banner {
      position: absolute;
    }
    img {
      width: 300px;
    }
    .title {
      position: absolute;
      top: 0;
      bottom: 0;
      left: 0;
      right: 0;
      color: #fff;
      text-align: center;
      font-weight: bold;
      font-size: 20px;
      display: flex;
      justify-content: center;
      align-items: center;
      p {
        padding: 0;
        margin: 10px 0;
      }
    }
  }
  .theme-intro-a {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 200;
    .mask {
      position: fixed;
      left: 0;
      right: 0;
      top: 0;
      bottom: 0;
      background: #000;
      opacity: 0.5;
    }
    .intro-banner {
      top: 50%;
      left: 50%;
      position: fixed;
      transform: translate(-50%, -50%);
      box-sizing: border-box;
      text-align: center;
      z-index: 100;
      img {
        width: 100%;
      }
      .intro-text {
        position: absolute;
        top: 50%;
        left: 0;
        right: 0;
        p {
          padding: 0;
          margin: 0;
          font-size: 48px;
          font-weight: bold;
          color: #fff;
        }
      }
    }
  }
}
.footer {
  background-color: var(--bg-color);
  width: 100%;
  padding: 40px 150px;
  box-sizing: border-box;
  height: 340px;

  .container {
    box-sizing: border-box;
    width: auto;
  }

  .footer-main {
    font-size: 0;
    display: inline-block;
    vertical-align: top;
    margin-right: 110px;

    h4 {
      font-size: 18px;
      line-height: 1;
      margin: 0 0 15px 0;
    }

    .footer-main-link {
      display: block;
      margin: 0;
      line-height: 2;
      font-size: 14px;
      color: var(--text-color-light);

      &:hover {
        color: var(--text-color);
      }
    }
  }

  .footer-social {
    float: right;
    text-align: right;

    .footer-social-title {
      color: var(--text-color-light);
      font-size: 18px;
      line-height: 1;
      margin: 0 0 20px 0;
      padding: 0;
      font-weight: bold;
    }

    .ep-icon-github {
      transition: 0.3s;
      display: inline-block;
      line-height: 32px;
      text-align: center;
      color: #c8d6e8;
      background-color: transparent;
      font-size: 32px;
      vertical-align: middle;
      margin-right: 20px;
      &:hover {
        transform: scale(1.2);
        color: #8d99ab;
      }
    }

    .doc-icon-gitter {
      margin-right: 0;
    }
  }
}

@media (max-width: 1140px) {
  .footer {
    height: auto;
  }
}

@media (max-width: 1000px) {
  .footer-social {
    display: none;
  }
}

@media (max-width: 768px) {
  .footer {
    .footer-main {
      margin-bottom: 30px;
    }
  }
}
</style>
